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BatchPartitioner in datafusion::physical_plan::repartition - Rust
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Struct datafusion::physical_plan::repartition::BatchPartitioner

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pub struct BatchPartitioner { /* private fields */ }
Expand description

A utility that can be used to partition batches based on Partitioning

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impl BatchPartitioner

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pub fn try_new(partitioning: Partitioning, timer: Time) -> Result<Self>

Create a new BatchPartitioner with the provided Partitioning

The time spent repartitioning will be recorded to timer

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pub fn partition<F>(&mut self, batch: RecordBatch, f: F) -> Result<()>where F: FnMut(usize, RecordBatch) -> Result<()>,

Partition the provided [RecordBatch] into one or more partitioned [RecordBatch] based on the Partitioning specified on construction

f will be called for each partitioned [RecordBatch] with the corresponding partition index. Any error returned by f will be immediately returned by this function without attempting to publish further [RecordBatch]

The time spent repartitioning, not including time spent in f will be recorded to the metrics::Time provided on construction

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